Update freetype sources (2.6.2) in third party.

third_party/freetype2/src/src/tools/update-copyright

Index: third_party/freetype2/src/src/tools/update-copyright
diff --git a/third_party/freetype2/src/src/tools/update-copyright b/third_party/freetype2/src/src/tools/update-copyright
new file mode 100755
index 0000000000000000000000000000000000000000..4a8bf9b0ea831349a38c8f731ec1a0b71398d0df
--- /dev/null
+++ b/third_party/freetype2/src/src/tools/update-copyright
@@ -0,0 +1,14 @@
+#!/bin/sh
+
+# Run the `update-copyright-year' script on all files in the git repository,
+# taking care of exceptions stored in file `no-copyright'.
+
+topdir=`git rev-parse --show-toplevel`
+toolsdir=$topdir/src/tools
+
+git ls-files --full-name $topdir        \
+| sed 's|^|../../|'                     \
+| grep -vFf $toolsdir/no-copyright      \
+| xargs $toolsdir/update-copyright-year
+
+# EOF